don't listen to OneEye!
you've been cheated! Zero means nothing, so you are missing the number 10. The best you can roll is 9. Why is it that people continue to make excuses for shoddy workmanship?

Conspiracy Theory 1:
The zero perhaps represents the set of numbers from -infinity to +.999 (<1). But why anyone would want to roll (-inf to <1) is beyond me. I've never seen it in any charts. There is no KERROLLLESSTHAN1 table.

Yeah, unfortunately I got a bunch of these on eBay way back. I didn't know these things were still floating around. You got stung, get back onto the guy and ask him what the fuck!?. Your dad would burst his face open.

Yeah, they aren't used for much. Every now and then one pops up for sale. It was a real stroke of luck that you found this many, dilanski. They can fetch quite a pretty penny in the right places.
The only game they were ever used for is the old GW game Man o' War, which used them to determine what the orcs were going to do in their turn.
Fun game, man o' war.